Kristin Cavallari Hairstyles. From chic and sophisticated ponytails, to shiny and wavy hairstyles Kristen exudes style and her hairstyles are always simple carefree yet elegant at the same time. Known for her blonde locks Kristen usually wears her hair lightly tousled or with loose curls. For a volumized look she'll sometimes add extensions for a fuller look. One thing that I love about Kristen is that her hair always looks healthy and trendy whether it's one the beach or it's on the red carpet. Look below to see her best styles.